This amplifier in common mode was obtained in an Electronic Design from the 90's. The circuit is valid for any operational, remembering that the power supply must be symmetrical.
This circuit comes from an English publication of 1976, consisting of an experimental touch key....
September 2016 - Mouser Electronics is offering the new oscillator clock PECL series PE55K of the...
This 1967 Motorola circuit is intended for operation with signals up to 250 MHz delivering a 50 MHz...